#define  _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
char* my_strcat(char* dest, const char* src)
{
	assert(dest && src);
	char* str = dest;
	while (*dest)
	{
		dest++;
	}
	while ( *dest++ == *src++  )
	{
		;
	}
	return str;

}